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Schach [20]
3 years ago
5

What is the cosine of angle D​

Mathematics
1 answer:
blagie [28]3 years ago
3 0

Answer:

\frac{28}{45}

Step-by-step explanation:

Please see the attached picture for the full solution.

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Anna is a teacher at an elementary school. She purchased 73 tickets to take the first-grade children and some parents on a field
Svetllana [295]

She bought 54 child tickets and 19 adult tickets.

Step-by-step explanation:

No. of tickets purchased = 73

Cost of tickets = $771

Cost of one child ticket = $9

Cost of one adult ticket = $15

Let,

Child ticket = x

Adult ticket = y

According to given statement;

x+y=73   Eqn 1

9x+15y=771   Eqn 2

Multiplying Eqn 1 by 9;

9(x+y=73)\\9x+9y=657\ \ \ Eqn\ 3\\

Subtracting Eqn 3 from Eqn 2;

(9x+15y)-(9x+9y)=771-657\\9x+15y-9x-9y=114\\6y=114\\

Dividing both sides by 6;

\frac{6y}{6}=\frac{114}{6}\\y=19

Putting y=19 in Eqn 1

x+19=73\\x=73-19\\x=54\\

She bought 54 child tickets and 19 adult tickets.

Keywords: linear equations, subtraction

Learn more about linear equations at:

  • brainly.com/question/3227215
  • brainly.com/question/3269852

#LearnwithBrainly

4 0
3 years ago
Solve the equation 2x + 4 - 9 Explain the steps<br> and properties you used.
Verizon [17]

Answer:

2x - 5

Step-by-step explanation:

2x + 4 - 9

the 2x gonna stay

so you take 4 - 9 = -5

so the answers gonna be 2x - 5

bc the 5 is negative so you gonna subtract

I hope you understand my english...

6 0
2 years ago
WILL GIVE BRAINLEIST DUE AT 9:45 P.M. PLS HURRY SUPER EASY.
Lemur [1.5K]

Answer:

c = 2

Step-by-step explanation:

Since 16 is over the variable c, first multiply both sides by c so the variable is not in the denominator of the fraction.

16/c(c) = 8(c)

16 = 8c           Next, divide both sides by 8 to solve for c.

c = 2

6 0
3 years ago
What is the next letter AZBYCXD
KATRIN_1 [288]
The pattern goes like this...
(1st letter from the beginning),(1st letter from the end),(2nd letter from the beginning),(2nd letter from the end), etc.

So the next letter in the pattern should be W.
7 0
3 years ago
Read 2 more answers
What is the length of segment AB?
AlekseyPX

Answer:

length of segment AB is 13

OR

AB = 13

Step-by-step explanation:

Use the Pythagorean Theorem with c being the length of segment AB.

a^2 + b^2 = c^2

5^2 + 12^2 = c^2

169 = c ^2 (square root both sides to get c by itself)

13 = c

5 0
3 years ago
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